Dry Season

Where Go Hydrology celebrates Florida’s drier half

Dry season wrap up?
And why it's not over yet

The dry season isn’t over …

But it’s entering its final weeks.

Rainfall over the past 7, 30 and 90 days across south Florida

When does the rainy season start?

Afternoon showers can start sputtering in April and early May, but it isn’t until later in May and early June that the water table typically rebounds.

Whatever the case, the verdict is in:

The 6-month dry season was was wetter than average across the entire southern peninsula with the exception of the Upper Kissimmee and with the lower east coast leading the way. District-wide, south Florida averages around 13 inches of rain compared to the 15 inches recorded this year.

Basin by basin comparison rainfall since the start of the dry season (blue) and the start of the calendar year (red). The hollow black bar shows the dry season average.

But May is a pivotal rain month.

Typically drought extends and deepens in its early half before the afternoon showers kick in or we get a big regional storm.

One more week, and Water Year 2022 is here!

As usual, it’s a wait and see.

dry season

History of “dry season” rain

To be sure,

The dry season is not over yet.

The chart above shows dry season rainfall in Big Cypress Nat’l Preserve from 1970 to present.  Red bars indicated “dry” dry seasons and blue bars indicate “wet” dry seasons.  Can you see how the past few dry seasons have been either “wet” or “dry?”  This year’s dry season total to date is just over 6 inches.

We still have another two months.

So it’s too early to predict a deep spring drought.

But now that the green out has begun,

A good 3-4 inches of dry season rain may be in store …

To boost us back into the long-term norm of around 11 inches of winter rain.